Perforating device



May 24, 1932- 7.]. F. GENTRY PERFORATING DEVICE Filed Feb. 24. 1951 H mm M W,

invention.

Patented May 24, 1932 UNITED sm'res JEFFERSON F. GENTEY, or NASHVILLE, TENNESSEE PERFORATING DEVICE Application filed February 24, 1931. Serial No. 517,982.

This invention relates to a perforating device for platen presses and has for its primary object to provide, in a manner as hereinafter set forth, a device of such character by means of which paper stock may be perforated simultaneously with the printing thereof, thereby reducing the time and labor ordinarily necessary to print and perforate a supply of paper, and assuring uniformity of the perforations with respect to the printing. 7

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more particularly described, and shown in the accompanying drawings, but it is to be understood that the description and drawings are to be considered as illustrative rather than limitative.

In the accompanying drawings in which like numerals are employed to designate like parts throughout the several views:

Figure l is a fragmentary plan showing a perforating device in accordance with this Figure 2 is a transverse section through the device with the perforating die shown in elevation.

Figure 3 is an enlarged fragmentary section through the device showing the relative position of the partsjust prior to the perforating operation.

Figure 4 is a View similar to Figure 3 showing the relative position of the parts during the perforating operation.

Referring to the drawingsin detail, the nu inerals 1 and 2 respectivelyindicate the platen and rocker of a press, the rocker 2 being adapted to carry the usual gripper bars, not shown. Seated on the platen 1 is a mat indicated generally at 3 and including a rectangular frame 4 which is rigidly securec in any suitable manner to the platen 1. By way of example, a plurality of cl amps 5 are illustrated for Securing the frame 4 in position on the platen.

Disposed within the confines of the frame 4 are a plurality of plates, in the present instance three in number and designated by the numerals 6, 7 and 8. Inter-posed between the plates 7 and 8-is a guide'plate 9, the side edges of which are detachably connected with the opposing edges of the plates 7 and 8'by means of removable tongues 10 which slidably extend within corresponding grooves in the Side edges of the plates 7, 8 and 9. Although but one guide plate 9 is shown, this number may be increased if desired by "arying the number or size of the plates 6, 7 and 8; By varying the size of the latter plates, one or more of the guide plates may be located at any point desired longitudinally of the frame 4. Irrespective of the number of guide plates employed, all of the plates within the frame are secured together by means of tongues, such as l0'which slid'ably extend into corresponding grooves-in the opposingedges of contacting plates. The plates thus connected together are vertically slidable within the frame 4 and are normally maintained in spaced relation to the platen 1 by means of a plurality of leaf springs 11, one of which is provided for each of the plates 6, 7 and Sand is disposed within a groove, such as 12, formed in the lower face of the plates.

The guide plate 9 is formed in its lower face with a relatively wide groove 13 for the reception therein of a punch bar 14 during the printing and perforating operation. The punch bar 14 is seated directly on the platen 1 and is of a width corresponding to the width of the groove 13. Seated on the punch bar 14 and extending into the groove 13 are 7 leaf springs 15 similar to the leaf springs 11. Projecting upwardly fromthe punch bar 14 openings 17 extending vertically throughthe guide plate 9 centrally with respect to the side edges of the latter. v

Fixedly secured to the rocker '2 is a die member which consists of an elongated bar is a centrally disposed row of punches 16 which slidably extend into corresponding the bar 18 therebetween when the latter is lowered into operating position.

In the operation of the device, the printing is performed in the usual manner, during which operation the plates 6, 7, 8 and 9 are pressed into contact with the platen 1 against the tension of the springs 11 and 15. Coincidentally with the printing operation, the die bar 18 is lowered, and upon the downward movement of the plates 6, 7, 8 and 9, the punches 16 are extended "entirely through the openings 17 and 20 whereby the paper, shown at 22, is perforated. Immediately upon the release of the plates 6, 7,8.and .9 by the movement'of the rocker 2, the plates are elevated to the positions shown in Figures 2 and 3 by the operation of the springsdisposed beneath the plates. This movement of the plates automatically withdraws the punches 16 from their projecting positions through the open- .i'ngs 17 in order that the plates may present a smooth uninterrupted surface for receiving the next sheet of paper to be printed and perforated. I

' It is thought that the many advantages of a perforating device in accordance with this invention will be readily apparent, and although the preferred embodiment of the in vention is as illustrated and described, it is to be understood that changes in the size, shape and arrangement of parts may be resorted to, so longas such changes fall within the scope of the invention as defined in the appended claims.

What I claim is;-

1. In a perforating device for connection with the platen and rocker of a printing press, a punch bar adapted to be seated on the platen, a'guide plate resiliently supported above the punch bar for supporting the stock to be perforated, said guide plate having a row of vertically disposed openings, a row of punches projecting upwardly from the punch bar into said openings, and a die baradapted to'be connected with the rocker for engagement with the stock supported on the guide plate to force the punches through the stock upon the operationof the rocker.

2. In a perforating device for connection with the platen and rocker of a printing press,

a punch bar adapted to be seated on the I platen, a guideplate resiliently supported above the punch bar for supporting the stock to be perforated, said guide plate having a row of Vertically disposed openings, a row of punches projecting upwardly from the punch bar into said openings, and a die bar adapted to be connected with the rocker for engagement with the stock supported on the guide plate to force the punches through the stock upon theoper-ation of the rocker, said die bar being of channeled construction and formed in its upper face with an elongated trough, said die bar further being formed in its lower face with a row of openings corresponding to said openings in the guide plate. 3. In a perforating deivce for connection with the platen and rocker of a printing press, a punch bar adapted tobe seated on spaced relation to the punch bar, a row of punches projecting upwardly from the punch bar into said openings, and a die bar adapted to be connected with the rocker for engage- .ment with the :stock supported on the guide plate to force the punches through the stock upon the operation of the rocker.

4. In a perforating device for connection with the platen and rocker of a printing press, a'frame secured to theplaten, a pair of plates vertically movable within the frame, a guide plate interposed between said pair of plates, means for resiliently supporting'said plates in spaced relation to the platen, a punch 'bar disposed beneath the guide plate, said guide plate having its lower face formed with a groove corresponding in width to the width of the punch bar and further having a plurality of vertically disposed openings, a plurality of punches projecting upwardly from the'punch bar into said openings, and a die bar connected with the rocker for depressing the guide plate to force said punches through the openings therein and into the die bar upon the operation of'the rocker.

5. In a perforating device for connection with the platen and rocker of a. printing press, a. frame seated on and connected with theplaten, a pair of plates vertically movable within the frame, a :guide plate interposed between and connected with said plates, each of 'said plates formed in its lower face with a .groove, leaf springs projecting into said grooves for normally maintaining the plates in spaced relation to the platen, a punch bar seated on the platen beneath the guide plate, said guide plate having a row of vertically disposed openings, a row-of punches projecting upwardly from the punch bar into said openings, a die bar rigidly connected with the rocker for depressing the guide plate to extend said punches therethrough and into the die bar upon the operation of the rocker,

and a pair of guidelugs mounted on th'eupper face of the guide plate for receiving said die bar therebetween.

In testimony whereof, I affix my signature hereto. c

JEFFERSON F. GENTRY. 

